Adjusting Sunscreen Formula for Slipperiness and Fragrance Addition

Asked by: hatunya On: October 29, 2014 Product Type: Cosmetics

Question

I have developed a sunscreen formula with the following ingredients and mixing steps. I would like to confirm if this formula and process are correct. Additionally, I have two specific questions:

Formula:

  • Distilled Water: 71.8%
  • SPF Protect Ultra™: 20%
  • WaterLock™: 1%
  • Light Cream Maker: 1.5%
  • LipidSoft™ CC: 2%
  • PowderCream™: 2%
  • Geranium Oil: 1%
  • Phenoxyethanol: 0.5%
  • Disodium EDTA: 0.2%

Mixing Steps:

  1. Mix SPF Protect Ultra™, Light Cream Maker, and LipidSoft™ CC together.
  2. Mix Distilled Water, Disodium EDTA, and WaterLock™ together.
  3. Gradually add mixture (2) into mixture (1) in 4 portions, mixing well after each addition until a cream texture forms.
  4. Add PowderCream™, Geranium Oil, and Phenoxyethanol into the cream base and mix thoroughly.

Questions:

  1. Is this formula and these mixing steps correct?
  2. How can I adjust the formula to make the cream more slippery?
  3. Do I need a separate solubilizer to add Geranium Oil to this formula?

Answer

Proposed Sunscreen Formula Adjustment

Based on your proposed formula and the previous discussion, the formula and mixing steps you have outlined are correct and align with the staff's advice.

Here is the confirmed formula:

  • Distilled Water: 71.8%
  • SPF Protect Ultra™: 20%
  • WaterLock™: 1%
  • Light Cream Maker: 1.5%
  • LipidSoft™ CC: 2%
  • PowderCream™: 2%
  • Geranium Oil: 1%
  • Phenoxyethanol: 0.5%
  • Disodium EDTA: 0.2%

Mixing Instructions:

  1. Mix SPF Protect Ultra™, Light Cream Maker, and LipidSoft™ CC together.
  2. Mix Distilled Water, Disodium EDTA, and WaterLock™ together.
  3. Gradually add mixture (2) into mixture (1) in 4 portions, mixing well after each addition until a cream texture forms.
  4. Add PowderCream™, Geranium Oil, and Phenoxyethanol into the cream base and mix thoroughly.

Regarding your questions:

  1. Making the cream more slippery: The addition of PowderCream™ at 2% is intended to help achieve a smoother, less sticky texture. As the staff suggested, you can adjust the percentage of PowderCream™ (starting perhaps lower, like 1%, and increasing up to 4% or 5%) to find the level of slip you prefer.
  2. Adding Geranium Oil: You do not need an additional solubilizer for the Geranium Oil. The Light Cream Maker in the formula will help emulsify the oil into the cream base.

Your adjusted formula and method are suitable for achieving the desired texture and incorporating the fragrance.